RECOVERY AND PROCESSING SYSTEMS FOR PCM-TDM-TRANSFERRED HDLC FRAMEWORKS, MORE SPECIFIC FOR DATA TRANSFERS.

摘要

The field of the invention is that of data transmission, within the telecommunications sector, in accordance with the ISO standardising protocol, particularly the reception of HDLC frames transmitted by multichannel PCM link. …??The essential aim is to provide a system comprising means common to all the channels for decoding and processing frames, whilst taking account of the fact that each frame must undergo a specific processing. …??According to the invention, this system includes multiplexed means for receiving HDLC frames, which are common to all the channels and which provide, for each PCM channel, in one frame, a reception word including one data byte and one state datum relating to this byte; means (84, 85, 86) for addressing transcoding means (80) with a datum relating to the length of each frame received, and a programmed automatic processing unit (76) receiving data bytes and at least one processing datum originating from the transcoding means (80), so as to accomplish, in respect of this byte, the processing indicated by the processing datum. …IMAGE…